The planet is warming at a pace not experienced within the past 1,000 years, at least, making it “very unlikely” that the world will stay within a crucial temperature limit agreed by nations just last year, according to Nasa’s top climate scientist.

NASA and the National Oceanic and Atmospheric Administration ― two leading global authorities on climate ― both say July 2016 was not only the hottest July on record, but the most sizzling month in the history of record-keeping.